On Tue, Aug 25, 2015 at 9:45 AM, Daniel Vetter daniel.vetter@ffwll.ch wrote:
These functions are used by drivers to release fbdev emulation buffers. We need to make them resilient to NULL pointers to make the fbdev compile/runtime knobs not cause Oopses on module unload.
Cc: Archit Taneja architt@codeaurora.org Signed-off-by: Daniel Vetter daniel.vetter@ffwll.ch
Reviewed-by: Rob Clark robdclark@gmail.com
drivers/gpu/drm/drm_crtc.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 33d877c65ced..884690c81094 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -538,7 +538,12 @@ EXPORT_SYMBOL(drm_framebuffer_reference); */ void drm_framebuffer_unregister_private(struct drm_framebuffer *fb) {
struct drm_device *dev = fb->dev;
struct drm_device *dev;if (!fb)return;dev = fb->dev; mutex_lock(&dev->mode_config.fb_lock); /* Mark fb as reaped and drop idr ref. */@@ -589,12 +594,17 @@ EXPORT_SYMBOL(drm_framebuffer_cleanup); */ void drm_framebuffer_remove(struct drm_framebuffer *fb) {
struct drm_device *dev = fb->dev;
struct drm_device *dev; struct drm_crtc *crtc; struct drm_plane *plane; struct drm_mode_set set; int ret;if (!fb)return;dev = fb->dev;WARN_ON(!list_empty(&fb->filp_head)); /*-- 1.8.3.1
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